Load returns the types found in the specified descriptor set keyed by fully qualified name.

Enum is a protobuf enum definition.

Field is a field in a message.

FieldMeta returns the attributes for a field needed in generated code.

Message represents a protobuf message.

OneOf represents a one-of field.

Type is an abstraction over a protobuf message or enum.

ContainerType indicates if the field is a container type with values none (empty string), "list", and "map".

FieldType indicates the type of field, "primitive", "enum" or "message".